Texas Instruments LM25119
The LM25119Q device is a dual synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply. The control method is based upon current mode control using an emulated current ramp. The use of an emulated control ramp reduces noise sensitivity of the pulsewidth modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications.| Part No. | LM25119 |
|---|---|
| Datasheet | LM25119 Download |
| Manufacturer |  Texas Instruments |
| Description | Dual Synchronous Buck Controller |
| Buy | Stock & Price |
FEATURES
●1 Qualified for AutomotiveAPPLICATIONS
● AEC-Q100 Qualified With the Following Results: – Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range – Device HBM ESD Classification Level 1C – Device CDM ESD Classification Level C4A● Emulated Peak Current Mode Control
● Wide Operating Range (4.5 V to 42 V)
● Easily Configurable for Dual Outputs or Interleaved Single Output
● Robust 3.3-A Peak Gate Drive
● Switching Frequency Programmable to 750 kHz
● Optional Diode Emulation Mode
● Programmable Output From 0.8 V
● Precision 1.5% Voltage Reference
● Programmable Current Limit
● Hiccup Mode Overload Protection
● Programmable Soft-Start
● Programmable Line Undervoltage Lockout
● Automatic Switchover to External Bias Supply
● Channel2 Enable Logic Input
● Thermal Shutdown
● Leadless 32-Pin WQFN Package 2
APPLICATIONS
● Automotive Infotainment● Automotive USB Accessory Adapters 3
DESCRIPTION
Current mode control provides inherent line feedforward, cycle-by-cycle current limiting and easeof-loop compensation.
